<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<img src="<?php echo SITE_URL.'index.php/test/code'; ?>" alt="nono" onclick="this.src=<?php echo "'".SITE_URL.'index.php/test/code'."'"; ?>" ><?php echo $a; ?>
	<form action="<?php echo SITE_URL.'index.php/test/login'; ?>" method="post">
	<label for="username"> 用户名:</label>
	<input type="text" name="username" >
	<label for="password">密码:</label>
	<input type="password" name="password">
	<label for="email">email</label>
	<input type="text" name="email">
	<input type="text" name="captcha">
	<input type="submit" value="提交">
	</form>
</body>
</html>